From what you said, it seems to me that you are an atheist about the Ouija board, even if, the Ouija board is a Medianic communication portal that recalls the spirits of the demons!
Therefore, touching the pieces of a broken table, or cut to pieces, does not produce any connection with the Spirits, but if you consult the table with the bench, then the spirits will come into connection, then you have to worry, because the spirits will answer you to everything you have asked and some things will happen to you over time.
If you then insist on the Ouija board, you can have momentary possessions of the spirits, and among other things, you will see movements of objects in the house, the vision of light shadows crossing the walls, and so on ....!
If you do not believe what I told you, you can get help from a "REAL" Medium, tell her that you want to attend the seances, and you will see the figure of a demon, with other amazing things that will happen in front of you !!